Metallic bin.



M. J. MoMARTIN.

METALLIC BIN.

APPLIUATION FILED no.1, 1909.

' 1,096,312, Patented May12,1914.

MALCOLM J. MCMARTIN, OF DULUTH, MINNESOTA, ASSIGNOR- TO.DULUTH COR-RU- GA'IING & ROOFING COMIANY,

MINNESOTA.

OF DULUTH, MINNESOTA, A CORPORATION OF METALLIC BIN.

To all tultom it mag concern Be it known that I, MALCOLM J. MCMAR- TIN, a citizen of the United States, residing,

at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Metallic 'Bins, of which the following is a specification.

My invention pertains to features of novelty and improvement in sheet-metal grainbins and similar structures, its principal aims and objects being the provision of a bin of this character which will be fire. proof; which can be built in sections and shipped knocked-down;'which can be readily put together and taken apart; which will be ventilated but also rain-tight; which will be strong, rigid, and durable; and, which will be wind and vermin proof;

The main object of the invention is the construction of a bin of this character, and having the advantages noted, at small expense and with comparatively few parts of simple construction.

Referring to the drawings, forming a part.

of this specification, it will be noted that Figure 1 is a central vertical section on an enlarged scale through the central top portion of the roof; Fig. 2 is a face view of one of the roof seams or joints; Fig. 3 is a fragmentary section in an enlarged scale through the roof and side-wall; and Fig. 4 is a face view of one of the retaining hook-shaped members for attachment of the roof to the bin proper.

The bin is desirably of substantially cylindrical form, the side walls being composed of a series of curved corrugated sheetmetal sections 22, 22 bolted together with staggered joints, such construction permitting the shipment of the parts or sections 22 in nested form occupying but small space. As will be readily understood, the corrugations of these sheet-metal plates give them great strength and stiffness, although the structure as a whole is of comparatively light weight. The adjacent edges of these curved sections are overlapped and bolted, riveted, or otherwise fastened together to form a container or receptacle of general cylindrical form and of the desired size and capacity.

At the top edge of the corrugated sides of the bin the sheet-metal is folded so as to provide a downwardly-inclined, outwardly- Specification of Letters Patent.

Application filed December 1, 1909.

Patented May 12, 1914.

Serial No. 530,768.

extended, marginal flange 31 of three thicknesses, more or less, of metal, such circular flange forming a convenient means for the attachment of the roof to the bin. The roof is composed of a plurality of sheet- .metal sectors 32, 32 united together along their adjacent edges in the manner indicated in Figs. 2 and'3; that is, one edge of each section is supplied with an upstanding flange 33 fitted in a groove formed by bending the metal at the edge of the adjacent plate to provide a hollow rib 34 closed on top. Alsoaccommodatedin each of such ribs is a 1longitudinally-disposed strengthening and stiffening bar 35, the lower ends of such ribs also housing the top portions of a plurality of roof-retaining or hookshaped sheet-metal members 36, the parts being retained in place by a bolt 37 passing through alined apertures in the rib 34, member 36, strengthening bar 35, and flange 33.

The members 36 are of the shape indicated in Fig. 4, and are so positioned that portions thereof underlie the flange 31 of the side-wall, the roof being fastened to such wall by bolts 39 extended through the roof-plate 32 and flange 31. By the employment of such means for fastening or securing the roof to the side wall of the bin, the roof is thereby anchored to the bin so that it cannot become displaced or carried away by high winds. At its apex the portion of the roof heretofore described has an aperture or opening 40, above which and resting on the top edge of the ribs 34 is a sheet-metal cone frustum 41 having a top opening 42. Fastened to the inside surface of the top part of the truncated cone 41 1 provide a plurality of bent bars 43, 43 which extend out through the opening 42 and are bent downwardly to provide the parts 44 substantially-parallel with the outer surface of the member 41 and adapted to hold in place by rivets 45 a sheet-metal cone-cap 46, which, as will be readily understood from the illustrations of Figs. 2 and 3, is spaced away fro-m the member 41, permitting ample ventilation of the interior of the bin. As a convenient and desirable means for securely fastening this ventilating double-cone structure to the top of the roof, I provide an other sheet-metal truncated retaining cone 47, the bottom portion of which is considerably larger in diameter than the aperture 40, while the upper portion of the same protrudes slightly upwardly through such aperture. The member 47, as I have clearly shown, may be bolted or otherwise secured at 48 to the inturned feet 19 of the bars 43. The bolts 48, as Will be readily understood, draw the truncated cone member 47 into firm engagement with the inner or under surface of the roof so that such member acts as an anchor for holding in place the ventilating cones, these in turn, as Well as the member 47, being supported by the cone l-l resting on the ribs 3st of the roof. There is, therefore, adequate ventilation of the bin, since the interior of the member 41 is in communication with the outer air through the space between the ribs and through the circular space between itself and the top cap 4.6.

Although I have herein indicated one particular au'l specific embodiment of the invention, it is to be understood that the in-.

vention is susceptible of a variety of embodiments, and that the structure herein described may be modified Within considerably wide limits without departure from the substance of the invention, and Without the sac rifice of any of its substantial benefits and advantages.

1. claim:

1. In a sheet-metal bin, the combination of a sheet-metal side-Wall having a top outstanding flange, a roof composed of sheetmetal sections joined together along their adjacent edges, and hook-shaped members secured to said roof in said joints and extending beneath said flange, substantially as described.

2. In a sheet-metal bin, the combination of a sheet-metal side-Wall having a top outstanding flange, a roof composed of sheetmetal sections joined together along their adjacent edges, stiflening bars in said joints, and hook-shaped members secured to said roof in said joints and extending beneath said flange, substantially as described.

MALCOLM J. MoMARTIN.

-Witnesses N. M. NELSON, CALEB l'vns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

